This Digital FM Receiver Circuit Board is made by bonding a layer of copper to the entire substrate, sometimes on both sides. After the temporary mask is applied, an etching process must be performed to remove unnecessary copper leaving only the desired copper traces. This Digital FM Receiver Circuit Board must be drilled to complete the components that must be connected to the multilayer PCB. That is, a through hole is drilled in the shape of an annular ring. A small drill bit made of tungsten carbide is used for drilling. For high volume production, we usually use automatic drilling machines. Sometimes this Digital FM Receiver Circuit Board may require a small hole to be drilled, and mechanical methods may permanently damage the PCB. In this case, the way the laser is drilled can be used to create an internal surface finish inside the hole. Its outer layer contains copper connections (portions where components are placed) that do not allow for solderability of the components. In order to make it solderable, the surface of the material must be gold plated, tin or nickel.
FR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-2,Aluminum
Max.finished board side
Min.drilled hole size
HALS/HALS lead free,Chemical tin,Chemical Gold,Immersion gold Inmersion Silver/Gold,Osp,Gold Plating
Solder mask color
Vacuum packing,Plastic bag
Standard carton packing